cryptpad/www/common/inner/invitation.js

55 lines
1.7 KiB
JavaScript

(function () {
var factory = function (Util, Nacl, Scrypt) {
var Invite = {};
Invite.deriveSeeds = function (safeSeed) {
// take the hash of the provided seed
var seed = safeSeed.replace(/\-/g, '/');
var u8_seed = Nacl.hash(Nacl.util.decodeBase64(seed));
// hash the first half again for scrypt's input
var subseed1 = Nacl.hash(u8_seed.subarray(0, 32));
// hash the remainder for the invite content
var subseed2 = Nacl.hash(u8_seed.subarray(32));
return {
scrypt: Nacl.util.encodeBase64(subseed1),
preview: Nacl.util.encodeBase64(subseed2),
};
};
Invite.deriveSalt = function (password, instance_salt) {
return (password || '') + (instance_salt || '');
};
// seed => bytes64
Invite.deriveBytes = function (scrypt_seed, salt, cb) {
Scrypt(scrypt_seed,
salt,
8, // memoryCost (n)
1024, // block size parameter (r)
192, // dkLen
200, // interruptStep
cb,
'base64'); // format, could be 'base64'
};
return Invite;
};
if (typeof(module) !== 'undefined' && module.exports) {
module.exports = factory(
require("../common-util"),
require("tweetnacl/nacl-fast"),
require("scrypt-async")
);
} else if ((typeof(define) !== 'undefined' && define !== null) && (define.amd !== null)) {
define([
'/common/common-util.js',
'/bower_components/tweetnacl/nacl-fast.min.js',
'/bower_components/scrypt-async/scrypt-async.min.js',
], function (Util) {
return factory(Util, window.nacl, window.scrypt);
});
}
}());